Output tokens cost $0.40 per million on Gemma 4 31B It and $6.00 per million on Grok 4.5. Input tokens cost $0.14 per million on Gemma 4 31B It and $2.00 per million on Grok 4.5. Context lengths are 262,100 tokens on Gemma 4 31B It and 500,000 tokens on Grok 4.5. Time to first token (TTFT) measured on AIHubMix is 1.0s on Gemma 4 31B It and 1.4s on Grok 4.5. Measured output throughput is 39.2 tok/s on Gemma 4 31B It and 27.7 tok/s on Grok 4.5.
Gemma 4 31B It
Grok 4.5Gemma 4 31B Instruct is Google DeepMind's 30.7B dense multimodal model supporting text and image input with text output. Features a 256K token context window, configurable thinking/reasoning mode, native function calling, and multilingual support across 140+ languages. Strong on coding, reasoning, and document understanding tasks. Apache 2.0 license.
Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Estimate your monthly bill for the same workload on each model.
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Gemma 4 31B It: $0.40/M output tokens; Grok 4.5: $6.00/M. Use the cost calculator above to estimate your own workload.
Gemma 4 31B It: 1.0s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Gemma 4 31B It accepts 262,100 and Grok 4.5 accepts 500,000 input tokens. Maximum output per request is 131,100 tokens on Gemma 4 31B It and 500,000 tokens on Grok 4.5.
Gemma 4 31B It at 39.2 tok/s and Grok 4.5 at 27.7 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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